#include <iostream>

#include "MathFunctions.h"

// include the generated table
#include "Table.h"

namespace mathfunctions {
	namespace detail {
		// a hack square root calculation using simple operations
		double mysqrt(double x)
		{
			if (x <= 0) {
				return 0;
			}

			// use the table to help find an initial value
			double result = x;
			if (x >= 1 && x < 10) {
				std::cout << "Use the table to help find an initial value " << std::endl;
				result = sqrtTable[static_cast<int>(x)];
			}

			// do ten iterations
			for (int i = 0; i < 10; ++i) {
				if (result <= 0) {
					result = 0.1;
				}
				double delta = x - (result * result);
				result = result + 0.5 * delta / result;
				std::cout << "Computing sqrt of " << x << " to be " << result << std::endl;
			}

			return result;
		}
	}
}